Gas-fired hot-air furnace



July 15; 1924; 1,501,283

W. C. LANGSTON GAS FIRED HOT AIR FURNACE Filed Jan, 17. 192s 2 sheets-sheet 1 @il J4 Juy H5 Q 19241.,4 A w. c. LANGSTON GAS FIRED HOT AIR FURNACE Filed Jan. 17. 192.3v 2 sheetsfsheefa @@M/M www@ Patented July l5, i924.

WILLIAM c. LANGSION, or OAK ramt, ILLINOIS, AssIGNoR or ONE-HALF To WALTER I; coBLE, or CHICAGO, ILLINOIS.

GAS-FIRED rHOT-.AIR FURNACE.

such as are ordinarily employed to' heat dwellings and other structures.

rIhe invention hasfamong' its various objects the provisionof a heater or furnace which comprises a cooljair Zone or region,

a combustion chamber, air heating zones or regions, and, 1nl addition thereto, providesa hot air Zone or region froml which the heated air may be withdrawn and transmitted to the various portions of theldwelling, or other structure, which it is desired to heat. Y

It is a prime object of the invention f to provide a combustionfchambeij whichis composed of a hollow element which,lwhen arranged inposition-inthe heater or' furnace, extends transversely across the -inte:

rior' of thefurnace casing and in the pathofthe air to be heated.

provide a combusti-0n chamber' 'which is composedof a plurality of these hollow or chamberedf elements and to arrange said them, through which the air to' beV heated may flow and become' heated during its passage froml the cool air' zone to the hotY air 4 Y zone ofthe furnace.

In' addition, it'is an o'bject to provide a combustion chamber, the construction'of'Y which produces a plurality ofcommunicating, chambered elements which ar'e con-l 5 Y cool air rzone to the hot air zonefof the furnace] Y It is a 'further object to constructsaid combustion chamber'so that the fumes and other products of combustion are prevented 5 from' escaping from the combustion chamber elements relatively to eachother, sov that a space will be provided between eachv of Application filed January 17, 1923. VSerial No. 613,101.

and becoming mixed with the heated Yair which is transmitted to the rooms of the dwelling or other structure to be heated.

Itis a further object to associate with a combustion chamber of the character above referred to suitable burners, designed to yburn gas, oil, or other suitable fuel,-and to arrange said burners so that the fumes and odors whichresult from their use are prevented from escaping into the furnace casing or the ro'om'in which the furnace is located. Gas burners are shown in the drawings' and referredto herein.

It is afurther object of the invention to provide each` of the hollow elements -formnv ing the combustion chamber with a-suitable structure whereby access to the interior of the combustion chamber may-be readily had, shouldthis at any time become necessary 'or desirable, and, in addition, to providev means whereby air may beintroduced into the combustion chamber and also regulated.

The invention will be explained and more readily understood when read in `conjunction with the accompanying drawings, inY which one embodiment of which the invention is susceptible is illustrated, it being kobvious that changes and modifications'mav be employed without l Y 'spirit of the vappended claims forming` a' It is a further object of the invention tov departing from the part hereof.y

In the drawings,

Figure l is a central, vertical section ofa'r furnace constructed accordingI to one em-y bodiment of the invention;

Figure 2 is a section taken ony line 2%2 of Figure l;

Figure 3 is a perspective view of the com# bustion `chamber employedy in thev structure illustrated in Figures lY andEZ;`

VFigure 4 is a section taken .on linev is-4c of Figure 3,-

Figure 5 is a sectionI showing in detail' the connection between the ends of7 the holV low: elements forming'the combustion cham` ber, theYV side walls of the casing forming`- the furnace and the frame to'which a-'closure' for the combustion chamber'is secured.

Iny the particular embodiment of thev in`VV ventioif'hereinI illustrated, the furnace casing isi ofasubstantiallyV rectangular outline and is constructed *to produce aY cooll air zone or regionflO. One wallof thefurnace, such as 11. is provided with an openinglQ, through which cold air is admittedfinto-the cool air zone. The Wall of the furnace is provided With a shelf 13 and an opening 14 through Which a container 15, in which a suitable amount of Water is confined, may be inserted into the zone 10. The container 15 is employed in the structure to afford the necessary humidity to the air` which materially increases the heat carrying capacity of the air and adds to the eiiiciency of the heater. l

An air heating zone or region 16 1s arranged above the zone or region 10 and 1s formed by the several corner Wall portions 17 18, 19, and 2() Which are secured to the combustion chamber generally designated 21 and also to the upper edges of the Wall forming the zone 10.

The combustion chamber is formed by means of a top Wall'22 and a bottom Wall 23 Which are each connected With the side Walls 24, 25, 26, and 27 in any suitable manv ner, as by bolts, rivets, or may be, in addition, Welded together to provide the seal necessary to prevent the escape of the fumes Aand other products of combustion.

The side Walls 24, 25, 26, and 27 of the combustion chamber and the associated Wall formations of the corner portions 17, 18, 19, and 2O cooperate to define the zone 16 and produce spaces Which provide the passages 28, 29, 30, and 31, through which the'k air passes from the cool air zone 10 into contact with the Walls of the combustion chamber 21 and` thence to the hot air zone or region 32 which is arranged above the zone 16 and the combustion chamber 21. The hot air zone or region is maintained through the cooperation of a lcover 33 having a plurality of hot air outlets and pipes 34, 34, through which the heated air is conducted to the various portions of the structure to be heated.

The Walls forming the zone 32 are provided With an annular collar 35, which, through the medium of the rivets 36 is secured to the Walls 17, 18, 19, and 2O which form the zone or region. The collar provides a means for holding the Wall 37 forming and defining part of the hot air zone in its proper relative position With respect to the remaining structure.

The combustion chamber generally designated 21 is formed in a manner to provide a plurality of communicating hollouT arms 38, 39, 40, and 41, the Walls 24, 25, 26, and 27 forming the sides thereof, and they plates 22 and 23, respectively, providing the top and bottom thereof. The plates 22 and V23 are each formed to provide a rightangled cut-out portion 42, as clearly shown in Figures 2 and3, the resultant structure producing arms or extensions 43. The side and end edges of these extensions, such as 43, are bent at an angle to the main portion of the plate, as indicatedV at 44 and 45,

and the bent sides 44 are riveted or other- Wise secured to the Walls 24, 25, 26, and 27 which are, respectively, arranged adjacent thereto. As before stated, the extremities of these extensions, such as 43, are bent, as indicated at 45, to provide iianges whereby the structure may be secured to a frame 47, to which a door, such as 48, is hingedly secured, and also to the. Wall 11, surrounding the cool air zone 10. The opposite ends of each of the Walls 24, 25, 26,v and 27 are each provided with a relatively long iiange 46, Which is designed to be riveted, welded, or otherwise secured to the edges of the Walls 17, 18, 19, and 20, which form the outer portion of the casing adjacent the combustion chamber 21. The open ends of the chambers formed by the Walls 24, 25,

26, and 27 and` the plates 22 and 23 are each provided with the frame 47 to which the door 48 is hingedly secured and, in addition, is provided with the apertures 49, through which air may enter the combustion chamber. The combustion chamber formed by the various elements 22, 23, 24, 25, 26, and 27 is lprovided with an opening 47 a, through which the products of combustion may escape from the combustion chamber. Each of the chambers 38, 39, 40, and 41 has arranged therein a burner of suitable form and size, Which extends into the chamber through an aperture 50 provided in the frame 47. In the present structure a burner, such as 51, extends from one chamber, such as 41, to the chamber 39 and the other chambers, such as 38 and 40 are each, respectively, provided, with burners 52 and 53. The outermost ends of these burners are connected to the supply pipe 54 Which, in turn, is connected to a main supply pipe 55. Each of the burners 51, 52, and 53 is provided with a valve 56 which is of that type which controls the amount of fuel passing to the burner, and, in addition, controls the iiovv of airrto the burner. It Will be apparent that one or more of the burners may be employed at any time, depending on the amount of heat Which is desired.

By referring particularly to Figures 4 and 5, it will be noted that the structure utilized in the formation of the combustion chamber and its connection With the remaining structure provides a connection between the outer casing of the furnace Which positively prevents the products of combustion from finding their Way from the combustion chamber into the interior of the casing provided by the Walls forming the severa-l regions or zones 10, 16, and 32, and, in addition, prevent the fumes and other products of combustion from iinding their Way into the room in which the furnace is located.

It is further manifest that the combustion chamber is arranged transversely of the casing forming the furnace and cooperates with the casing to provide passages between it and the casing through which the air flows from the cool air zone to the hot air zone while being heated.

It will be evident that the construction and arrangement of the combustion chamber permits the use of a chamber of this character which is of a relatively large dimension and thus the time necessary for heating the air will be materially reduced and the heat units consumed also be lessend, all of which cooperates to increase the eiiciency of the structure.

I-Iaving thus described the invention, what I claim and desire to secure by Letters Patent is:

l. A combustion chamber providing a unit adapted to be arranged within and transversely of a main casing for a furnace having an air inlet and outlet, said chamber having communicating radially arranged hollow arms or branches which extend to each of the walls of said casing and are provided with doors at their outer ends, said Vunit being adapted to be arranged between the inlet and outlet of the main casing so that air entering the casing may pass through the space provided between the radially arranged hollow arms of the combustion chamber, and said radially arranged hollow arms being adapted to have burners arranged therein which extend through the main casing and lengthwise of and within said arms.

2. In a heater the combination with a casing having a hot air chamber and a cold air chamber, of a combustion chamber positioned between said air chambers, said combustion chamber comprising a plurality of upwardly extending angular shaped side wall members, iiauges on the lateral edges of said angular members riveted to said casing, and upper and lower end wall members having flanged edges riveted to said angular members and to the casing whereby said combustion chamber is sealed from said hot and cold air chambers, and whereby said combustion chamber has a plurality oiV branched arms radiating outwardly to the said casing, anda burner within each of said arms.

In witness whereof, I hereunto'subscribe my name this 1l day of January, A. D. 1923.

' WILLIAM c. LANGsToN. Y 

